Table 2

Compositional data in weight percent of martian meteorite Zagami and the C2 chondrite Murchison performed by APXS and (9).

Zagami APXS counting time: 127,470 sZagami (9)Murchison APXS counting time: 242,030 sMurchison APXS counting time: 20,360 sMurchison (9)
Na2O 2.3 0.7  to  1.2 1.5 0.7 0.2
MgO8.8 8.6  to 11.6 18.2 18.219.9
Al2O3 7.1 4.8  to  6.2 2.4 2.32.3
SiO2 49.6 48.4  to 50.9 31.031.0 28.5
SO3 0.3 0.15 to  0.29 7.87.87.9
K2O 0.25 0.13 to  0.24 0.06 0.04 0.04
CaO10.9 9.7  to 11.1 2.0 1.81.9
TiO2 1.0 0.74 to  1.4 0.040.06
FeO 17.4 18.0  to 24.5 30.230.2 27.1